Gummed paper



Patented Dec. 19, 1933 PATENT OFFICE UNITED STATES oummn mum No Drawing.

Application December 19, 1928 Serial No. 327,198

1 Claim. (01. 91-09) This invention relates to coated papers and it aims to devise a gummed paper adapted especially for window advertising.

A paper inten d for this purpose should have 5 an adhesive coa mg on the side which is-to be applied to the window so that it can be fastened in place without using stickers. In order to avoid the use of special type it is necessary to print on the adhesively coated surface, and this fact introduces difllculties because of the tendency of the adhesive to make the ink run. The present invention deals especially with this problem. Is is preferable to use a. paper which is transparent so that the advertising matter can be seen from both sides of the window and more particularly for the purpose of permitting illumination of the advertisement at night; For this reason I prefer to use a paper of the class known as glassine papers. For a gum ccat-' ing I have found that a mixture of dextrine and gelatine glue is exceptionally satisfactory. While the proportions of these materials can be varied considerably, an adhesive consisting" of 90% of dextrine mixed with 10% of high grade animal or fish glue produces entirely satisfactory results. A thin coating of this adhesive is applied to one face of the paper, and such a coating will take almost any of the common quick drying printing inks without causing them to run. Bothblack and colored inks can be used with entire satisfaction.

Other adhesives such as gum'arabic and glue combined will also give good results and can be used in place of the dextrine glue mixture, although none .of these other adhesives are as satisfactory in all respects as the combination of dextrine and gelatine glue.

- In using this, paper the advertising matter is printed on the gummed surface, the ink is dried, and later the printed sheet is applied to a window by moistening the gum around the margin of the Fsheet. Very striking. advertising effects can be produced with this material, particularly when aglassine paper is used.

Having thus described my invention, what I desire to claim as new is:

An article of the character described comprising transparent paper coated with an adhesive consisting essentially of a high percentage of dextrine and a smaller percentage 01 a gelatine glue, said adhesive coating being normally dry and non-tacky but adapted to adhereto glass and having the characteristic of taking a great variety of printing inks without causing the inks to run.

WILLIAM W. McIiAUItIN- 'iio 

